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- 학술저널
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- 발행연도
- 2024.1
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Aging is accompanied by the gradual deregulation of the transcriptome. However, whether age-dependent changes in the transcriptome are evolutionarily conserved or diverged remains largely unexplored. Here, we performed a meta-analysis examining the age-dependent changes in the transcriptome using publicly available datasets of 11 representative metazoans, ranging from Caenorhabditis elegans to humans. To identify the transcriptomic changes associated with aging, we analyzed various aspects of the transcriptome, including genome composition, RNA processing, and functional consequences. The use of introns and novel splice sites tended to increase with age, particularly in the brain. In addition, our analysis suggests that the age-dependent accumulation of premature termination codon-containing transcripts is a common feature of aging across multiple animal species. Using C. elegans as a test model, we showed that several splicing factors that are evolutionarily conserved and age-dependently downregulated were required to maintain a normal lifespan. Thus, aberrant RNA processing appears to be associated with aging and a short lifespan in various species.
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